Refrigerator



J ne 29, 1943. H. c. SHAGALOFF REFRIGERATOR Filed Dec. 26, 1940 llllllll un v v fNTo 00000 O o q "000 0 BY I Qwz,

ORNEY Patented June 29,194:

. REFRIGERATOR Harry G. Shagaloif, Evansville, Ind., assignor to Servel, Inc., New York, N. Y., a corporation of Delaware Application December 20, 1940, Serial No. 371,626

11 Claims. (Cl. 62-1) This invention relates to refrigerators in which the refrigerating apparatus is operated by heat from a liquid fuel burner, and it is an object of the invention to provide a simply and quickly operated disconnect in the flame path between a refrigerating apparatus and its burner so that the latter is readily movable and removable for servicing, as set forth in the following description with reference to the accompanying drawing, wherein:

Fig. 1 shows partly in elevation and partly in section a portion only of a refrigerator embodying the invention;

Fig. 2 is a view like that of Fig. 1, showing a diflerent operative relation of parts; v

Fig. 3 is a detail section taken on line 2-2 in Fig. 1; and I Fig. 4 shows alone and in elevation the movable part of the disconnect.

Referring to the drawing, a refrigerator cabinet I2 is equipped with an absorption type refrigerating apparatus of which there is shown only the lower end of a generator II. A flue I! for heating the generator ll projects downward beyond the lower end of the generator. The generator is encased in suitable thermal insulation secured by a casing l2.

Below the generator i I is a fuel tank ll having therein a suitable liquid fuel, such as kerosene. Mounted on the tank is a burner l5 having a wick I6 depending into the tank. The burner is secured on the tank I4 by means of brackets ll. The burner is provided with a stub chimney ll of glass or other suitable material. The tank and burner are movable as a unit so as'to be withdrawn from beneath the generator for servicins.

o obtain good heating efllciency, it is desirable that the chimney and flue be made, in effect, an integral part of the flame system, that is, that the chimney ll be connected in aligned sealed relation with the flue I2. For this purpose I provide a self-sealing disconnect in the form of a ring or sleeve I! of metal or other suitable heat resisting material with a central opening 20 and which is slidably and rotatably Journalled on the lower projecting end of the flue II. The bottom or base 2| of the ring is formed with an annular recess 22 adapted to rest upon and engage the top of the chimney l8, and within the recessed area the surface of the base is flat and smooth to effect a seal with the top of the chimney.

Above the base, the ring is enlarged in diameter to provide a flange 22. The under surface of flange 23 is formed with a series of inclined faces or cams 24. The ring I9 is rotatably supported from the generator insulation casing l2 by means of brakets 25 which engage beneath the inclined faces or cams 24 of the ring. To facilitate rotation of the ring the latter is provided with a suitable handle 21.

Fig. 2 shows the ring IS in chimney and flue connecting and sealing position. In this position the bottom of the ring l9 rests on the top of the chimney ii, there being a slight clearaipe between the inturned portions 26 of the brackets 25 so that the ring rests by gravity directly on the top of the chimney. To disconnect the chimney from the flue, it is only necessary to push the handle 21 to the position shown in Fig. 1, thereby bringing the cam faces 24 in contact with the inturned portions 26 of the brackets 25 and causing the ring to move upward to the position shown inFig. 1. To again connect the chimney and flue in aligned and sealed relation after the burner has been returned to position beneath the flue It, the handle 21 is turned back to its original position, whereupon the ring I! descends and rests by gravity upon the top of the chimney.

When the seal ring I9 is down, it rests on top of the chimney and seals by gravity. Extra pressure cannot be exerted on the glass chimney due to further rotation of ring l9 since once contact is made between the ring and chimney, further rotation simply breaks contact between the members 26 of the brackets 25 and the cam faces of the ring. This feature results in uniformity of seal, since it depends on the weight of the ring, the flatness of the lower face of the ring and the top of the chimney, all of which factors are easily controlled.

While I have shown and described a specific embodiment of my invention, it is to be understood that this has been done for the purpose of illustration only, and that the scope is not to be limited thereby, but is to be determined from the following claims.

What is claimed is:

1. In a refrigerator having a heat-receiving element provided with a flue, a burner including a chimney removably mounted in an operative position beneath said element with an end of said chimney contiguous to an end of said flue, and a member coacting with said flue and chimney and movable independently of movement of said burner or chimney to and from a position sealing the joint between the contiguous ends of said flue and chimney when in said operative position.

2. In a refrigerator having a heat-receiving element provided with a flue. a burner including merit ment with said flue, a member supported for a chimney removably mounted beneath said elev thsaid chimney substantially in alignmovement independent of movement of said burner or chimney and substantially axially of the flueand chimney, said member having a portion in movable engagement with the lower end of the flue and another portion adapted to engage the top of the chimney and effect a seal between the contiguous chimney. I

3. In a refrigerator having a heat-receiving element provided with a flue, a burner including a chimney removably mounted beneathsaid element with said chimney communicating with said flue, a member in movable engagement with the lower end of the flue, means for imparting to said member reciprocating movement independent of movement of said burner and substantially axially of the flue, said member hav- 20 ing a part adapted to rest on the top of the chimney and eflect aseal between the contiguous ends of the flue and chimney.

4. In a refrigerator having a heat-receiving element provided with a flujei a burner including a chimney removably mounted beneath said element with said chimney communicating with said flue, a member encircling the lower end of. theflue, means for imparting to said member reciprocating movement independent of move- 3 ment of said burner and substantially axially of the flue, said member having a part adapted to rest on the top of said chimney and effect a seal between the contiguous ends of the flue and chimney.

5. In arefrigerator having a heat-receiving element provided with a flue, a burner including a chimney removably mounted beneath said element with said chimney communicating with said flue, a member in movableengagement with so the lower end of the flue and having a part with a surface adapted to rest on the top of the chimney, means rotatably supporting said member including cam means operative upon rotation of said member to lowerthe latter onto said chimney.

, saidmember is rotated it is moved axially of the flue into and from sealing position.

7. In absorption type refrigerating apparatus including a generator having a flue and a burner provided with a chimney removably mounted beends of the flue and l 8. In a refrigerator having a heat-receiving element provided with a flue, a burner including a chimney removably mounted in an operative position beneath said element with said chimney communicating with said flue, a member movable relative to both said flue and chimney when in said operative position and having a portion in movable engagement with one of said flue and chimney and engageable with the other of said flue and chimney to provide a closed flame path therebetween.

9. In a refrigerator having a heat-receiving element provided with a flue, a movable fuel tank, a burner rigidly mounted on said tank and having a chimney communicating with said flue, a member in movable engagement with the lower end of the flue and having a portion adapted to engage the chimney and provide a closed flame path between the flue and chimney, and means supporting said member operative to permit gravity movement of the latter into engagement with said chimney.

10. In a heat operated refrigeration apparatus having a heat receiving part provided with an upright flue, a liquid fuel burner having a chimney, said burner-being movable horizontally into. and away from a position in which said chimney is in substantial alignment with said flue, a sleeve siidably engaging the lower end of said flue, and means for raising and, lowering said sleeve, the lower part of said sleeve being adapted to rest upon said chimney substantially in air tight relation therewith, and said means being operative to release said sleeve so that the latter rests under its own weight when lowered upon said chimney.

11. In heatioperated refrigeration apparatus having a heat receiving part provided with an upright flue, a liquid fuel burner having a glass chimney, said burner being horizontally movable into and away from a position in which said chimney is in substantial alignment with the lower end of said flue, a ring'slidably and rotatably -journalled on the lower end of said flue, a handle for turning said ring, and cam means operative upon turning of said ring to raise said ring against gravity and permit said ring to descend due to gravity, the lower part of said ring being adapted to'rest upon and snugly engage the upper end of said chimney.

HARRY C. SHAGALOFF. 

